11 00 050 Removing and installing engine (S54)

Special Tools Required:

11 0 000
51 2 160

Instructions for disconnecting and connecting battery. Refer to 12 00... INSTRUCTIONS FOR DISCONNECTING AND CONNECTING BATTERY .
Disconnect negative battery lead.

Move engine hood to assembly position:

NOTE: The following work must be carried out with a second person assisting. Work instruction applies to left and right sides.

Gently raise retaining clip and simultaneously push upwards.

Fig 1: Moving Engine Hood To Assembly Position

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Hold engine hood, unhook damper on hood.

Slide special tool 51 2 160 over damper.

Open engine hood completely and reconnect damper with special tool 51 2 160 to hood.

Fig 2: Sliding Hood/Bonnet Stay Over Damper

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Remove microfilter.

Open cable duct on lower section of microfilter housing (2) and feed out cable(s).

Release screws (1) and remove lower section of microfilter Housing (2)

Fig 3: Identifying Cable Duct On Microfilter Housing

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Remove engine vent (1).

Remove oil filler cap (2).

Remove engine cover.

Fig 4: Removing Engine Vent And Oil Filler Cap

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Remove engine splash guard.

Remove reinforcement plate.

CAUTION: The article 51 71 374 REMOVING AND INSTALLING / REPLACING REINFORCEMENT PLATE ON FRONT AXLE SUPPORT (M3) , contains important installation instructions.

Remove A/C compressor drive belt. Refer to 11 28 050 REPLACING A/C COMPRESSOR DRIVE BELT (S54) .

Remove A/C compressor from bearing block and tie back to one side.

NOTE: Lines remain connected.

Drain and dispose of coolant.

NOTE: The water drain plug is located on the exhaust side on cylinder 2 in the engine block.

Installation:

Replacing sealing ring on water drain plug.
Tightening torque, (25 N.m.).

Remove intake air manifold. Refer to 11 61 050 REMOVING AND INSTALLING INTAKE AIR MANIFOLD (S54) .

Remove throttles. Refer to 13 54 030 REMOVING AND INSTALLING/SEALING THROTTLE ASSEMBLY (S54) .

Pull lock and detach water hoses (1 and 2).

Installation:

Refer to 17 00... INSTRUCTIONS FOR WORKING ON COOLING SYSTEM. .

Fig 5: Detaching Water Hoses
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Drain power steering supply tank, detach from left carrier bracket and tie to one side.

NOTE: Lines remain connected.

Remove fan clutch with fan impeller from water pump. Refer to 11 52 020 REMOVING AND INSTALLING/REPLACING FAN CLUTCH (S52 / S54 / M52 / M52TU / M54 / M56) .

Remove engine oil cooler.

Remove radiator. Refer to 17 11 000 REMOVING AND INSTALLING RADIATOR (S54) .

Remove alternator drive belt. Refer to 11 28 010 REPLACING ALTERNATOR DRIVE BELT (S54) .

Remove vane pump for power steering and tie back to one side.

NOTE: Lines remain connected.

NOTE: Wiring harness section for engine is disconnected from car and removed with engine.

Disconnect plug connections on DME control unit. Disconnect wiring harness section from car and lay to engine.

NOTE: When the engine is being lifted out, there is the danger that the belt pulley may be damaged.

Unfasten screws. Remove belt pulley

Fig 6: Locating Belt Pulley Screws

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Remove transmission. See REMOVAL & INSTALLATION - M3 (S6S 420G SMG)

Remove starter motor. See STARTER

Detach steering spindle from steering gear. Refer to POWER STEERING GEAR .

CAUTION: Only raise engine on locating lugs provided for this purpose.

Fit engine to special tool 11 0 000.

Fig 7: Fitting Engine To Engine Lifter

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Unfasten right ground wire.

Unscrew left and right engine mounts.

Carefully lift out engine.